Device not ready errors with EMC Clariion storage but good LVM filters

Solution Verified - Updated -

Issue

  • Device not ready messages in the logs:

    Sep 20 17:42:25 hostname1 kernel: end_request: I/O error, dev sda, sector 0 
Sep 20 17:42:25 hostname1 kernel: printk: 100 messages suppressed. 
Sep 20 17:42:25 hostname1 kernel: Buffer I/O error on device sda, logical block 0 
Sep 20 17:42:25 hostname1 kernel: sd 0:0:0:1: Device not ready: <6>: Current: sense key: Not Ready 
Sep 20 17:42:25 hostname1 kernel:     Add. Sense: Logical unit not ready, manual intervention required

Environment

  • Red Hat Enterprise Linux 5.2 through 5.5
  • EMC Clariion storage (or presumably other active/passive storage)
  • Good LVM filters
  • ALUA not used as a path checker

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